CVE-2026-58240
Missing Authentication check in SAP NetWeaver (Message Server)
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
SAP NetWeaver Message Server does not sufficiently validate the authenticity of internal application server components during registration. An unauthenticated attacker with network access to the affected service could exploit this weakness to register an unauthorized component and potentially perform unauthorized actions within the application environment, resulting in a high impact on the confidentiality, integrity, and availability of the affected system.
| Vendor | sap_se |
| Product | sap netweaver (message server) |
| Published | Sep 8, 2026 |
| Last Updated | Sep 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
SAP_SE / SAP NetWeaver (Message Server)
KERNEL 9.16 9.18 9.19 9.20